فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri - Paris Observatory

The point of the sky, north or south, where the projection of the
Earth's axis of rotation intersects the → celestial sphere.
They are at 90° relative to the → celestial equator.
Because of → precession, the celestial poles
describe a circle around the ecliptic's poles every 25,800 years.